Quantum dot, SUHD, 8K, HDR: what are these new terms on TVs?

Another CES came to an end, dictating trends in various sectors of technology for the rest of the year. As usual, the television sector is one of the busiest at the event and, especially in this edition, there was a proliferation of new terms referring to screens. In many of these cases, the consumer does not even know what each of these acronyms means.

The manufacturers used their spaces at CES to talk about 4K, OLED, LCD, UHD, SUHD, 8K, HDR, quantum dot and nanocrystal technology display. If all this is confusing even for us in the press, imagine for the lay consumer. That is why Re / Code folks consulted Ray Soneira, physicist and founder of DisplayMate Technologies to explain each of the terms. We reproduce below:

QD, Quantum dot technology:
The quantum dot, or QD (acronym for quantum dot), is the new bet to replace the LEDs that backlight LCD screens. Using nanotechnology, the expectation that these nanocrystals will emit a purer white light than conventional LED, making colors more accurate and showy.

Manufacturers have a lot of confidence in this new technology that is not even superior to OLED, which is even more reliable for reproducing dark images and still the only one capable of producing absolute black. In the OLED, each pixel is lit or deleted individually, allowing the reproduction of true black, with total absence of light, instead of the dark gray presented by other technologies.

However, the quantum dot is considerably cheaper than OLED and therefore the strong bet on this new technology. Several manufacturers are already introducing their LCD TVs that replace the LED backlight with a quantum dot film.

Nanocrystal technology
Quantum dot and nanocrystal technology are, in short, the same thing, although nanocrystals have other applications besides screens. Manufacturers choose the term according to their preferences for marketing.

You have probably used HDR on your cell phone camera. Now several televisions are leaving the factory with this built-in technology. High Dynamic Range is a type of software feature that allows you to improve the details of the darkest parts of an image so that it has a better balance between light and dark.

When a manufacturer says its TV has HDR technology, it means that a software does the image processing in real time so that the result is better, revealing details hidden in the darkest parts, but also recovering information that was hidden by excess of light.

8K screens
It should not be this year that the first 8K TVs hit the market, but manufacturers have already started demonstrating their prototypes at CES. In this case, the advancement in technology places more pixels in a given space.

For comparison, Full HD has 1920 x 1080 resolution, while 4K also called UHD, features 3840×2160. The 8K, in turn, leaves everyone behind with 7680×3840 resolution.

But it’s worth? According to experts, you can notice the difference on small screens only if you look at them closely, as is the case with computer monitors or tablets, for example. In the case of televisions, which are usually far from the user in the room, the difference would only be noticed on screens of 120 inches or more. In other words: 8K will take time to be a trend in the market.

Samsung used CES to promote its new SUHD televisions, which were supposed to bring the maximum in resolution, contrast, brightness and color fidelity. But after all, what does the “S” of SUHD mean?


that’s right. As mentioned above UHD and 4K are the same. As all manufacturers are starting to bet on this resolution, Samsung tries to differentiate itself by placing this “S” in the front, which does not have a clear meaning. Our favorite bet that the “S” comes from Samsung, but the company denies it.

Vice President Joe Stinziano, in an interview explains the “S”. “It means several things. We use this S as a designation when we feel that we have made a real leap in the consumer’s experience. Then you can put any adjective you want to, like ‘superior’, for example ”. So that’s right.

Via Re / Code

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